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C++ CopiedBlock::reportLiveBytes方法代码示例

本文整理汇总了C++中CopiedBlock::reportLiveBytes方法的典型用法代码示例。如果您正苦于以下问题:C++ CopiedBlock::reportLiveBytes方法的具体用法?C++ CopiedBlock::reportLiveBytes怎么用?C++ CopiedBlock::reportLiveBytes使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在CopiedBlock的用法示例。


在下文中一共展示了CopiedBlock::reportLiveBytes方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: copyLater

void SlotVisitor::copyLater(JSCell* owner, CopyToken token, void* ptr, size_t bytes)
{
    ASSERT(bytes);
    CopiedBlock* block = CopiedSpace::blockFor(ptr);
    if (block->isOversize()) {
        ASSERT(bytes <= block->size());
        // FIXME: We should be able to shrink the allocation if bytes went below the block size.
        // For now, we just make sure that our accounting of how much memory we are actually using
        // is correct.
        // https://bugs.webkit.org/show_bug.cgi?id=144749
        bytes = block->size();
        m_heap.m_storageSpace.pin(block);
    }

    ASSERT(heap()->m_storageSpace.contains(block));

    LockHolder locker(&block->workListLock());
    // We always report live bytes, except if during an eden collection we see an old object pointing to an
    // old backing store and the old object is being marked because of the remembered set. Note that if we
    // ask the object itself, it will always tell us that it's an old black object - because even during an
    // eden collection we have already indicated that the object is old. That's why we use the
    // SlotVisitor's cache of the object's old state.
    if (heap()->operationInProgress() == FullCollection
        || !block->isOld()
        || m_currentObjectCellStateBeforeVisiting != CellState::OldGrey) {
        m_bytesCopied += bytes;
        block->reportLiveBytes(locker, owner, token, bytes);
    }
}
开发者ID:llelectronics,项目名称:lls-qtwebkit,代码行数:29,代码来源:SlotVisitor.cpp


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